shoot off vs shoot one's load

shoot off

verb
  • To do (something, usually a written or verbal communication) quickly, and without hesitation or forethought. 

  • To leave quickly 

  • To overshoot the bounds of a set when filming, showing part of what lies outside it. 

  • Used other than figuratively or idiomatically: see shoot, off. 

shoot one's load

verb
  • To expend one's resources or one's opportunity, especially prematurely; to blow one's chance. 

  • To ejaculate; to cum. 

How often have the words shoot off and shoot one's load occurred in a corpus of books? (source: Google Ngram Viewer )